Wellll I don’t entirely agree. Ever been to IKEA and had a cart full of furniture? It takes every bit of strength my strong body can manage to take a turn without sliding out of control sideways and knocking over five display units and three children. The non-turning back wheels make turns more manageable. Carts should work like cars, front wheels turn, back wheels don’t. I submit this comment as sacrifice.
I’ve had a consistently unbiased experience with Tangle: https://www.readtangle.com/about/